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Magnetic recording disk and disk drive with alternating single-polarity position error signal (PES) blocks for read/write head positioning
Magnetic recording disk and disk drive with alternating single-polarity position error signal (PES) blocks for read/write head positioning
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机译:磁记录磁盘和磁盘驱动器,带有交替的单极性位置误差信号(PES)块,用于读/写磁头定位
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摘要
A magnetic recording disk drive has a position-error-signal (PES) servo pattern divided into at least two circumferentially adjacent fields that extend radially across the data tracks and include PES blocks that are DC magnetized in one direction, with each PES block having a magnetization opposite to the magnetization of its radially adjacent neighboring PES blocks. Each PES field is contiguous with and shifted radially relative to its circumferentially adjacent neighbor PES fields. Each PES block has a single DC magnetization, and the length of the magnetization is substantially longer than the length of the magnetizations in the other fields of the servo pattern.
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